Results: 65

Salinity does not alter the effectiveness of menthol as an anesthetic and sedative during the handling and transport of juvenile fat snook (Centropomus parallelus)

Braz. j. biol; 76 (3), 2016
Abstract The effectiveness of menthol as anesthetic and sedative for fat snook (Centropomus parallelus) was tested at different salinities. In the first experiment, the fish were exposed to different concentrations of menthol (25, 37 and 50 mg L–1) in water at different salinities (0, 17 and 36 ppt...

Abundance and spatial-temporal distribution of the shrimp Xiphopenaeus kroyeri (Decapoda: Penaeidae): an exploited species in southeast Brazil

Braz. j. biol; 76 (3), 2016
Abstract This study evaluated the abundance and spatial-temporal distribution of the shrimp Xiphopenaeus kroyeri in the coastal region of Macaé, state of Rio de Janeiro, southeastern Brazil. Monthly samples were obtained from March 2008 to February 2010 in six stations located in Inner (5, 10 and 15m de...

Alleviation of salt stress by halotolerant and halophilic plant growth-promoting bacteria in wheat (Triticum aestivum)

Braz. j. microbiol; 47 (3), 2016
ABSTRACT In the current study, 18 halotolerant and halophilic bacteria have been investigated for their plant growth promoting abilities in vitro and in a hydroponic culture. The bacterial strains have been investigated for ammonia, indole-3-acetic acid and 1-aminocyclopropane-1-carboxylate-deaminase pro...

Cambios anatómicos en raíces e hipocótilos de plántulas de Prosopis ruscifolia (Fabaceae) sometidas a estrés salino

Rev. biol. trop; 64 (3), 2016
ResumenProsopis ruscifolia es una especie arbórea pionera en áreas inundadas o salinas. El objetivo de este trabajo fue determinar cambios anatómicos en raíces e hipocótilos de plántulas de P. ruscifolia sometidas a estrés salino, bajo condiciones controladas. Las semillas se recolectaron en bosqu...

Seed dormancy of Ochradenus baccatus (Resedaceae), a shrubby species from Arabian desert regions

Rev. biol. trop; 64 (3), 2016
Abstract:Ochradenus baccatus is a perennial glycophyte growing in Middle East and it is one of the most important food sources for many animal species in desert regions. The aim of our study was to investigate the effects of seed storage, light, temperature and gibberellic acid (GA3) on germination of O....

Effects of terrestrial runoff on the coral communities in Santiago Bay, Colima, Mexican Pacific Coast

Rev. biol. trop; 64 (3), 2016
Abstract:Coral reef ecosystems are under stress of different origins, from factors including sedimentation, fragmentation, overfishing, and tourism, depending on their geographical location, depth, and proximity to recreation areas. In this study of Juluapan Lagoon, we examined the relationship between v...

Reproductive periods of Lucina pectinata (BIVALVE; LUCINIDAE) in the Paranaguá Estuarine Complex, Paraná - Brazil

Braz. j. biol; 76 (2), 2016
Abstract The objectives of the present study is to describe the size for exploitation and gonadal maturation of L. pectinata in Peças Island in Paraná coast. Twenty two individuals were sampled every month, from an intertidal flat of the Peças River, Municipality of Guaraqueçaba, during two periods &...

Efecto de la temperatura y la salinidad en el ciclo reproductor de hembras y machos de Crassostrea virginica (Bivalvia: Ostreidae)

Rev. biol. trop; 64 (2), 2016
ResumenLa reproducción del ostión americano, Crassostrea virginica se encuentra ligada a la temperatura y la salinidad. Sin embargo el efecto de estos parámetros no ha sido evaluado por sexos y por tallas. En este trabajo se analiza el efecto de la temperatura y la salinidad sobre la reproducción del...

Salinity-induced changes in the morphology and major mineral nutrient composition of purslane (Portulaca oleracea L) accessions

Biol. Res; 49 (), 2016
This study was undertaken to determine the effects of varied salinity regimes on the morphological traits (plant height, number of leaves, number of flowers, fresh and dry weight) and major mineral composition of 13 selected purslane accessions. Most of the morphological traits measured were reduced at v...

Development and health status of Centropomus undecimalisparasitized by Rhabdosynochus rhabdosynochus (Monogenea) under different salinity and temperature conditions

This study evaluated the correlation of hematological parameters with the mean abundance of the monogenean helminth Rhabdosynochus rhabdosynochus in Centropomus undecimalis reared at different temperatures and salinities. The experimental conditions were: 28 °C/0 ppt (parts per thousand); 28 °C/15 ppt;...